title: Control of T cell responses, tolerance and autoimmunity by regulatory T cells: current concepts.
mesh_terms: D000818:Animals; D015551:Autoimmunity / Q000276:immunology*; D015496:CD4-Positive T-Lymphocytes / Q000276:immunology; D006801:Humans; D007108:Immune Tolerance / Q000276:immunology*; D013601:T-Lymphocytes / Q000276:immunology*